[mapserver-users] Mapinfo TAB files and lcc projection

[Stephen Woodbridge]

Ari,

I looked and don't think I can help with your specifiec question, but I
did notice another problem that I ran into recently. In you map file you
have:

SIZE 600 600
#EXTENT -565918.875607 55035.833974 506926.040335 1264723.213684
EXTENT -180 -90 180 90
UNITS METERS

You probably need to change to "UNITS DD". 

The aspect ratio of your image 600/600 = 1 and the aspect ratio of the
map is 360/180 = 2 this will confuse mapserver for some opperations. You
should change you EXTENT -180 -180 180 180

The UNITS may be also messing up your initial zoom state,

-Steve W.

Ari Yakar wrote:
> 
> Hi All,
> 
> I am trying to use simple Mapinfo TAB files (Map of Canada,capitals and
> Highways) with Mapserver 3.5. If I don't
> apply any projection there is no problem. However when I specify the
> projection
> settings, map loads with 40x zoomed in. I have to Zoom out to see the whole
> map.
> I checked documentation of proj3 and proj4 but can't figure out the proper
> settings
> The following is the PROJECTION settings I have in the map file.
> 
> PROJECTION
>   "proj=lcc"
>   "ellps=GRS80"
>   "lat_0=60"
>   "lon_0=-105"
>   "lat_1=61.666666700"
>   "lat_2=63.333333300"
>   "datum=NAD83"
>   "units=m"
> END
> 
> I am attaching the Map file just in case it might help to identify the
> problem.
> 
> Thanks
> 
> Ari Yakar
> Globvision Inc.
> 
>   ------------------------------------------------------------------------
>                Name: demo.map
>    demo.map    Type: Plain Text (text/plain)
>            Encoding: quoted-printable